Номер 17, страница 175, часть 1 - гдз по алгебре 10 класс учебник Пак, Ардакулы

Алгебра, 10 класс Учебник, авторы: Пак Олег Владимирович, Ардакулы Дархан, Ескендирова Елена Викторовна, издательство Алматыкітап баспасы, Алматы, 2019

Авторы: Пак О. В., Ардакулы Д., Ескендирова Е. В.

Тип: Учебник

Издательство: Алматыкітап баспасы

Год издания: 2019 - 2026

Часть: 1

ISBN: 978-601-01-3958-9

Рекомендовано Министерством образования и науки Республики Казахстан

Часть 1. Глава 3. Тригонометрические уравнения и неравенства. Параграф 3. Простейшие тригонометрические неравенства. 3.4. Системы простейших тригонометрических неравенств. Задачи - номер 17, страница 175.

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                          #original: array:6 [ …6]
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                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_author" => Illuminate\Database\Eloquent\Collection {#1127
                      #items: array:3 [
                        0 => App\Models\Term {#1128
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
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                          #with: []
                          #withCount: []
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                          #attributes: array:12 [ …12]
                          #original: array:12 [ …12]
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                          #touches: []
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                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [ …1]
                        }
                        1 => App\Models\Term {#1129
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
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                          #escapeWhenCastingToString: false
                          #attributes: array:12 [ …12]
                          #original: array:12 [ …12]
                          #changes: []
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                          #attributeCastCache: []
                          #dateFormat: null
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                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [ …1]
                        }
                        2 => App\Models\Term {#1130
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
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                          #escapeWhenCastingToString: false
                          #attributes: array:12 [ …12]
                          #original: array:12 [ …12]
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                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
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                          #relations: []
                          #touches: []
                          +timestamps: true
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                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [ …1]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1131
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_book_type" => Illuminate\Database\Eloquent\Collection {#1132
                      #items: array:1 [
                        0 => App\Models\Term {#1133
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:10 [ …10]
                          #original: array:10 [ …10]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
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                          #relations: []
                          #touches: []
                          +timestamps: true
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                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [ …1]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_country" => Illuminate\Database\Eloquent\Collection {#1134
                      #items: array:1 [
                        0 => App\Models\Term {#1135
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
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                          #attributes: array:6 [ …6]
                          #original: array:6 [ …6]
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                          #touches: []
                          +timestamps: true
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                          #hidden: []
                          #visible: []
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                          #guarded: array:1 [ …1]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_city" => Illuminate\Database\Eloquent\Collection {#1136
                      #items: array:1 [
                        0 => App\Models\Term {#1137
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
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                          #with: []
                          #withCount: []
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                          +exists: true
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                          #attributes: array:6 [ …6]
                          #original: array:6 [ …6]
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                          #touches: []
                          +timestamps: true
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                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [ …1]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_series" => Illuminate\Database\Eloquent\Collection {#1138
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1139
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1140
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1141
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_publication_number" => null
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1142
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                      #escapeWhenCastingToString: false
                    }
                    "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1143
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_under_the_edition_degree" => null
                    "field_cover_description" => null
                    "field_publication_year" => "2019"
                    "field_publication_year_until" => null
                    "field_part" => "1, 2"
                    "field_part_writing" => "Часть"
                    "field_second_foreign_language" => null
                    "field_for_whom" => "Учебник для учащихся 10 класса общеобразовательной школы общественно-гуманитарного направления"
                    "field_allowed" => "Рекомендовано Министерством образования и науки Республики Казахстан"
                    "field_reserve_field" => null
                    "field_link_to_source" => null
                    "field_tasks_count" => "1063"
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                    "field_cover" => array:1 [
                      0 => "/media/algebra_10/baspasy-u19/covers/cover1.webp?ts=1752152865"
                    ]
                    "field_cover_alts" => array:1 [
                      0 => ""
                    ]
                    "field_covers" => array:1 [
                      0 => array:4 [
                        "path" => "/media/algebra_10/baspasy-u19/covers/cover1.webp?ts=1752152865"
                        "alt" => ""
                        "width" => "1940"
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                      ]
                    ]
                    "field_popular_book" => null
                    "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1144
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_new_book" => Illuminate\Database\Eloquent\Collection {#1145
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_old_book" => Illuminate\Database\Eloquent\Collection {#1146
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_url" => "/10-klass/algebra/baspasy-pak-uchebnik"
                    "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1147
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_metatags_title" => null
                    "field_metatags_description" => null
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                    "breadcrumbs" => array:3 [
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                      "class_subject" => 387
                    ]
                  ]
                  #original: array:50 [
                    "id" => 4295
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                    "field_subject" => Illuminate\Database\Eloquent\Collection {#1122}
                    "field_class" => Illuminate\Database\Eloquent\Collection {#1123}
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1125}
                    "field_author" => Illuminate\Database\Eloquent\Collection {#1127}
                    "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1131}
                    "field_book_type" => Illuminate\Database\Eloquent\Collection {#1132}
                    "field_country" => Illuminate\Database\Eloquent\Collection {#1134}
                    "field_city" => Illuminate\Database\Eloquent\Collection {#1136}
                    "field_series" => Illuminate\Database\Eloquent\Collection {#1138}
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1139}
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1140}
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1141}
                    "field_publication_number" => null
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1142}
                    "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1143}
                    "field_under_the_edition_degree" => null
                    "field_cover_description" => null
                    "field_publication_year" => "2019"
                    "field_publication_year_until" => null
                    "field_part" => "1, 2"
                    "field_part_writing" => "Часть"
                    "field_second_foreign_language" => null
                    "field_for_whom" => "Учебник для учащихся 10 класса общеобразовательной школы общественно-гуманитарного направления"
                    "field_allowed" => "Рекомендовано Министерством образования и науки Республики Казахстан"
                    "field_reserve_field" => null
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                    "field_cover" => array:1 [
                      0 => "/media/algebra_10/baspasy-u19/covers/cover1.webp?ts=1752152865"
                    ]
                    "field_cover_alts" => array:1 [
                      0 => ""
                    ]
                    "field_covers" => array:1 [
                      0 => array:4 [
                        "path" => "/media/algebra_10/baspasy-u19/covers/cover1.webp?ts=1752152865"
                        "alt" => ""
                        "width" => "1940"
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                      ]
                    ]
                    "field_popular_book" => null
                    "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1144}
                    "field_new_book" => Illuminate\Database\Eloquent\Collection {#1145}
                    "field_old_book" => Illuminate\Database\Eloquent\Collection {#1146}
                    "field_url" => "/10-klass/algebra/baspasy-pak-uchebnik"
                    "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1147}
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "breadcrumbs" => array:3 [
                      "class" => 381
                      "subject" => 542
                      "class_subject" => 387
                    ]
                  ]
                  #changes: []
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                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1148
              #items: []
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:24 [
            "id" => 1119328
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => null
            "field_branch_order" => "1"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1121}
            "field_page_start" => "6"
            "field_branch_display" => "0"
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            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
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            "field_metatags_title" => null
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            "field_branch_cover" => array:1 [
              0 => "/media/algebra_10/baspasy-u19/covers/cover1.webp?ts=1752152865"
            ]
            "field_branch_covers" => array:1 [
              0 => array:4 [
                "path" => "/media/algebra_10/baspasy-u19/covers/cover1.webp?ts=1752152865"
                "alt" => ""
                "width" => "1940"
                "height" => "2895"
              ]
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1150}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1148}
          ]
          #changes: []
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          #dateFormat: null
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          #touches: []
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          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Branch {#1149
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1119382
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Тригонометрические уравнения и неравенства"
            "field_branch_order" => "3"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1154
              #items: array:1 [
                0 => App\Models\Term {#1151
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:7 [
                    "id" => 29
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Глава"
                    "field_cases" => array:6 [ …6]
                    "field_page_check_not_needed" => null
                    "field_short_name" => null
                  ]
                  #original: array:7 [
                    "id" => 29
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Глава"
                    "field_cases" => array:6 [ …6]
                    "field_page_check_not_needed" => null
                    "field_short_name" => null
                  ]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #dispatchesEvents: []
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_page_start" => "122"
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            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1153
              #items: array:1 [
                0 => App\Models\Book {#1120}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1152
              #items: array:1 [
                0 => App\Models\Branch {#1034}
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:24 [
            "id" => 1119382
            "created_at" => "2026-04-10 13:58:26"
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            "field_display_title" => "Тригонометрические уравнения и неравенства"
            "field_branch_order" => "3"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1154}
            "field_page_start" => "122"
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            "field_display_branch_page" => "1"
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            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1153}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1152}
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          #touches: []
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          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        2 => App\Models\Branch {#1155
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1119399
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Простейшие тригонометрические неравенства"
            "field_branch_order" => "3"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1159
              #items: array:1 [
                0 => App\Models\Term {#1156
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
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                  #withCount: []
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                  #perPage: 15
                  +exists: true
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                  #escapeWhenCastingToString: false
                  #attributes: array:7 [
                    "id" => 32
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Параграф"
                    "field_cases" => array:6 [ …6]
                    "field_page_check_not_needed" => null
                    "field_short_name" => "§"
                  ]
                  #original: array:7 [
                    "id" => 32
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Параграф"
                    "field_cases" => array:6 [ …6]
                    "field_page_check_not_needed" => null
                    "field_short_name" => "§"
                  ]
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                  #attributeCastCache: []
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                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_page_start" => "157"
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            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1158
              #items: array:1 [
                0 => App\Models\Book {#1120}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1167
              #items: array:1 [
                0 => App\Models\Branch {#1166
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [
                    "id" => 1119382
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => "Тригонометрические уравнения и неравенства"
                    "field_branch_order" => "3"
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1168 …2}
                    "field_page_start" => "122"
                    "field_branch_display" => "0"
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                    "field_display_branch_in_title" => "1"
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                    "field_navigation_title" => null
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "field_branch_cover" => []
                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1169 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1170 …2}
                  ]
                  #original: array:24 [
                    "id" => 1119382
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => "Тригонометрические уравнения и неравенства"
                    "field_branch_order" => "3"
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1168 …2}
                    "field_page_start" => "122"
                    "field_branch_display" => "0"
                    "field_branch_expanded" => "0"
                    "field_display_branch_in_title" => "1"
                    "field_display_task_interval" => "0"
                    "field_display_branch_page" => "1"
                    "field_branch_title_in_content" => "0"
                    "field_navigation_title" => null
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "field_branch_cover" => []
                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1169 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1170 …2}
                  ]
                  #changes: []
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:24 [
            "id" => 1119399
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Простейшие тригонометрические неравенства"
            "field_branch_order" => "3"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1159}
            "field_page_start" => "157"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1158}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1167}
          ]
          #changes: []
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          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
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          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        3 => App\Models\Branch {#1160
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1119406
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "3.4. Системы простейших тригонометрических неравенств"
            "field_branch_order" => null
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1157
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_page_start" => "172"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1163
              #items: array:1 [
                0 => App\Models\Book {#1120}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1176
              #items: array:1 [
                0 => App\Models\Branch {#1175
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [
                    "id" => 1119399
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => "Простейшие тригонометрические неравенства"
                    "field_branch_order" => "3"
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1177 …2}
                    "field_page_start" => "157"
                    "field_branch_display" => "0"
                    "field_branch_expanded" => "0"
                    "field_display_branch_in_title" => "1"
                    "field_display_task_interval" => "0"
                    "field_display_branch_page" => "1"
                    "field_branch_title_in_content" => "0"
                    "field_navigation_title" => null
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "field_branch_cover" => []
                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1178 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1179 …2}
                  ]
                  #original: array:24 [
                    "id" => 1119399
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => "Простейшие тригонометрические неравенства"
                    "field_branch_order" => "3"
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1177 …2}
                    "field_page_start" => "157"
                    "field_branch_display" => "0"
                    "field_branch_expanded" => "0"
                    "field_display_branch_in_title" => "1"
                    "field_display_task_interval" => "0"
                    "field_display_branch_page" => "1"
                    "field_branch_title_in_content" => "0"
                    "field_navigation_title" => null
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                     …7
                  ]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:24 [
            "id" => 1119406
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "3.4. Системы простейших тригонометрических неравенств"
            "field_branch_order" => null
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1157}
            "field_page_start" => "172"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
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            "field_h1" => null
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            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1163}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1176}
          ]
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          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        4 => App\Models\Branch {#1164
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1119407
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Задачи"
            "field_branch_order" => null
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1161
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_page_start" => "174"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1172
              #items: array:1 [
                0 => App\Models\Book {#1120}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1185
              #items: array:1 [
                0 => App\Models\Branch {#1184
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:24 [
            "id" => 1119407
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Задачи"
            "field_branch_order" => null
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1161}
            "field_page_start" => "174"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1172}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1185}
          ]
          #changes: []
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          #attributeCastCache: []
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          +timestamps: true
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          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "content" => Illuminate\Database\Eloquent\Collection {#1070
      #items: array:2 [
        0 => App\Models\Element {#1097
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:7 [
            "id" => 1300665
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1088
              #items: array:1 [
                0 => App\Models\Edition {#1087
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [ …21]
                  #original: array:21 [ …21]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "task" => array:2 [
              "refs" => "1119980"
              "type" => "task"
            ]
            "text" => "<p>Найдите область определения функции (17-18):</p><p><strong>17. (2) a)</strong> $y=\sqrt{-2\sin x-\sqrt{3}}-\sqrt{6\cos x-3}$;</p><p><strong>6)</strong> $y=\frac{2\operatorname{tg}x}{\sqrt{3\operatorname{ctg}x+\sqrt{3}}}+\frac{1}{\sqrt{10\sin x-5}}$.</p>"
            "img" => array:1 [
              0 => array:5 [
                "name" => "17-1.jpg"
                "alt" => null
                "width" => "1652"
                "height" => 306
                "path" => "/media/algebra_10/baspasy-u19/0-3-3-4zad/17-1.webp?ts=1753534702"
              ]
            ]
          ]
          #original: array:7 [
            "id" => 1300665
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1088}
            "task" => array:2 [
              "refs" => "1119980"
              "type" => "task"
            ]
            "text" => "<p>Найдите область определения функции (17-18):</p><p><strong>17. (2) a)</strong> $y=\sqrt{-2\sin x-\sqrt{3}}-\sqrt{6\cos x-3}$;</p><p><strong>6)</strong> $y=\frac{2\operatorname{tg}x}{\sqrt{3\operatorname{ctg}x+\sqrt{3}}}+\frac{1}{\sqrt{10\sin x-5}}$.</p>"
            "img" => array:1 [
              0 => array:5 [
                "name" => "17-1.jpg"
                "alt" => null
                "width" => "1652"
                "height" => 306
                "path" => "/media/algebra_10/baspasy-u19/0-3-3-4zad/17-1.webp?ts=1753534702"
              ]
            ]
          ]
          #changes: []
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          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
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          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Element {#1095
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:6 [
            "id" => 1551701
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1079
              #items: array:1 [
                0 => App\Models\Edition {#1094
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [ …21]
                  #original: array:21 [ …21]
                  #changes: []
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "task" => array:2 [
              "refs" => "1119980"
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            "text" => "<p><strong>a)</strong></p><p>Область определения функции $y = \sqrt{-2\sin x - \sqrt{3}} - \sqrt{6\cos x - 3}$ находится из условий, что подкоренные выражения должны быть неотрицательными. Это приводит к системе неравенств:</p><p>$\begin{cases} -2\sin x - \sqrt{3} \ge 0 \\ 6\cos x - 3 \ge 0 \end{cases}$</p><p>Решим каждое неравенство отдельно.</p><p>1. Решим первое неравенство:</p><p>$-2\sin x - \sqrt{3} \ge 0$</p><p>$-2\sin x \ge \sqrt{3}$</p><p>Разделим обе части на -2 и сменим знак неравенства:</p><p>$\sin x \le -\frac{\sqrt{3}}{2}$</p><p>Решением этого тригонометрического неравенства является множество $x \in [-\frac{2\pi}{3} + 2\pi n, -\frac{\pi}{3} + 2\pi n]$, где $n \in \mathbb{Z}$.</p><p>2. Решим второе неравенство:</p><p>$6\cos x - 3 \ge 0$</p><p>$6\cos x \ge 3$</p><p>$\cos x \ge \frac{1}{2}$</p><p>Решением этого тригонометрического неравенства является множество $x \in [-\frac{\pi}{3} + 2\pi n, \frac{\pi}{3} + 2\pi n]$, где $n \in \mathbb{Z}$.</p><p>Теперь найдем пересечение решений обоих неравенств, то есть найдем значения $x$, которые одновременно удовлетворяют условиям $\sin x \le -\frac{\sqrt{3}}{2}$ и $\cos x \ge \frac{1}{2}$.</p><p>Рассмотрим решения на тригонометрической окружности. Множество решений первого неравенства $[-\frac{2\pi}{3} + 2\pi n, -\frac{\pi}{3} + 2\pi n]$ и множество решений второго неравенства $[-\frac{\pi}{3} + 2\pi n, \frac{\pi}{3} + 2\pi n]$ имеют только одну общую точку для каждого периода $2\pi$. Эта точка $x = -\frac{\pi}{3} + 2\pi n$.</p><p>В этой точке оба неравенства обращаются в равенства:</p><p>$\sin(-\frac{\pi}{3}) = -\frac{\sqrt{3}}{2}$</p><p>$\cos(-\frac{\pi}{3}) = \frac{1}{2}$</p><p>Следовательно, система неравенств имеет решение только в этих точках.</p><p><strong>Ответ:</strong> $D(y) = \{-\frac{\pi}{3} + 2\pi n \mid n \in \mathbb{Z}\}$.</p><br><p><strong>б)</strong></p><p>Область определения функции $y = \frac{2\tg x}{\sqrt{\sqrt{3}\ctg x + \sqrt{3}}} + \frac{1}{\sqrt{10\sin x - 5}}$ находится из следующих условий:</p><p>1. Функции $\tg x$ и $\ctg x$ должны быть определены, что означает $\cos x \neq 0$ и $\sin x \neq 0$. Это эквивалентно условию $x \neq \frac{\pi k}{2}$ для любого целого $k$.</p><p>2. Выражения под корнями, находящимися в знаменателях, должны быть строго больше нуля.</p><p>Это приводит к системе неравенств:</p><p>$\begin{cases} \sqrt{3}\ctg x + \sqrt{3} > 0 \\ 10\sin x - 5 > 0 \end{cases}$</p><p>Решим каждое неравенство отдельно.</p><p>1. Решим первое неравенство:</p><p>$\sqrt{3}\ctg x + \sqrt{3} > 0$</p><p>$\sqrt{3}(\ctg x + 1) > 0$</p><p>$\ctg x > -1$</p><p>Решением этого неравенства является объединение интервалов $x \in (\pi n, \frac{3\pi}{4} + \pi n)$, где $n \in \mathbb{Z}$.</p><p>2. Решим второе неравенство:</p><p>$10\sin x - 5 > 0$</p><p>$10\sin x > 5$</p><p>$\sin x > \frac{1}{2}$</p><p>Решением этого неравенства является объединение интервалов $x \in (\frac{\pi}{6} + 2\pi n, \frac{5\pi}{6} + 2\pi n)$, где $n \in \mathbb{Z}$.</p><p>Теперь найдем пересечение множеств решений этих двух неравенств. Период функции $\sin x$ равен $2\pi$, а период функции $\ctg x$ равен $\pi$. Общий период будет $2\pi$. Рассмотрим решения на интервале $[0, 2\pi)$.</p><p>Решение для $\ctg x > -1$ на $[0, 2\pi)$ состоит из двух интервалов: $(0, \frac{3\pi}{4})$ и $(\pi, \frac{7\pi}{4})$.</p><p>Решение для $\sin x > \frac{1}{2}$ на $[0, 2\pi)$ - это интервал $(\frac{\pi}{6}, \frac{5\pi}{6})$.</p><p>Найдем пересечение $(\frac{\pi}{6}, \frac{5\pi}{6})$ с объединением $(0, \frac{3\pi}{4}) \cup (\pi, \frac{7\pi}{4})$.</p><p>Пересечение $(\frac{\pi}{6}, \frac{5\pi}{6})$ с $(0, \frac{3\pi}{4})$ дает интервал $(\frac{\pi}{6}, \frac{3\pi}{4})$, так как $\frac{\pi}{6} > 0$ и $\frac{3\pi}{4} < \frac{5\pi}{6}$ (поскольку $9\pi < 10\pi$).</p><p>Пересечение $(\frac{\pi}{6}, \frac{5\pi}{6})$ с $(\pi, \frac{7\pi}{4})$ пусто, так как $\frac{5\pi}{6} < \pi$.</p><p>Следовательно, решением на интервале $[0, 2\pi)$ является $(\frac{\pi}{6}, \frac{3\pi}{4})$. Учитывая периодичность $2\pi$, получаем общую область определения.</p><p><strong>Ответ:</strong> $D(y) = \bigcup_{n \in \mathbb{Z}} (\frac{\pi}{6} + 2\pi n, \frac{3\pi}{4} + 2\pi n)$.</p>"
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            "text" => "<p><strong>a)</strong></p><p>Область определения функции $y = \sqrt{-2\sin x - \sqrt{3}} - \sqrt{6\cos x - 3}$ находится из условий, что подкоренные выражения должны быть неотрицательными. Это приводит к системе неравенств:</p><p>$\begin{cases} -2\sin x - \sqrt{3} \ge 0 \\ 6\cos x - 3 \ge 0 \end{cases}$</p><p>Решим каждое неравенство отдельно.</p><p>1. Решим первое неравенство:</p><p>$-2\sin x - \sqrt{3} \ge 0$</p><p>$-2\sin x \ge \sqrt{3}$</p><p>Разделим обе части на -2 и сменим знак неравенства:</p><p>$\sin x \le -\frac{\sqrt{3}}{2}$</p><p>Решением этого тригонометрического неравенства является множество $x \in [-\frac{2\pi}{3} + 2\pi n, -\frac{\pi}{3} + 2\pi n]$, где $n \in \mathbb{Z}$.</p><p>2. Решим второе неравенство:</p><p>$6\cos x - 3 \ge 0$</p><p>$6\cos x \ge 3$</p><p>$\cos x \ge \frac{1}{2}$</p><p>Решением этого тригонометрического неравенства является множество $x \in [-\frac{\pi}{3} + 2\pi n, \frac{\pi}{3} + 2\pi n]$, где $n \in \mathbb{Z}$.</p><p>Теперь найдем пересечение решений обоих неравенств, то есть найдем значения $x$, которые одновременно удовлетворяют условиям $\sin x \le -\frac{\sqrt{3}}{2}$ и $\cos x \ge \frac{1}{2}$.</p><p>Рассмотрим решения на тригонометрической окружности. Множество решений первого неравенства $[-\frac{2\pi}{3} + 2\pi n, -\frac{\pi}{3} + 2\pi n]$ и множество решений второго неравенства $[-\frac{\pi}{3} + 2\pi n, \frac{\pi}{3} + 2\pi n]$ имеют только одну общую точку для каждого периода $2\pi$. Эта точка $x = -\frac{\pi}{3} + 2\pi n$.</p><p>В этой точке оба неравенства обращаются в равенства:</p><p>$\sin(-\frac{\pi}{3}) = -\frac{\sqrt{3}}{2}$</p><p>$\cos(-\frac{\pi}{3}) = \frac{1}{2}$</p><p>Следовательно, система неравенств имеет решение только в этих точках.</p><p><strong>Ответ:</strong> $D(y) = \{-\frac{\pi}{3} + 2\pi n \mid n \in \mathbb{Z}\}$.</p><br><p><strong>б)</strong></p><p>Область определения функции $y = \frac{2\tg x}{\sqrt{\sqrt{3}\ctg x + \sqrt{3}}} + \frac{1}{\sqrt{10\sin x - 5}}$ находится из следующих условий:</p><p>1. Функции $\tg x$ и $\ctg x$ должны быть определены, что означает $\cos x \neq 0$ и $\sin x \neq 0$. Это эквивалентно условию $x \neq \frac{\pi k}{2}$ для любого целого $k$.</p><p>2. Выражения под корнями, находящимися в знаменателях, должны быть строго больше нуля.</p><p>Это приводит к системе неравенств:</p><p>$\begin{cases} \sqrt{3}\ctg x + \sqrt{3} > 0 \\ 10\sin x - 5 > 0 \end{cases}$</p><p>Решим каждое неравенство отдельно.</p><p>1. Решим первое неравенство:</p><p>$\sqrt{3}\ctg x + \sqrt{3} > 0$</p><p>$\sqrt{3}(\ctg x + 1) > 0$</p><p>$\ctg x > -1$</p><p>Решением этого неравенства является объединение интервалов $x \in (\pi n, \frac{3\pi}{4} + \pi n)$, где $n \in \mathbb{Z}$.</p><p>2. Решим второе неравенство:</p><p>$10\sin x - 5 > 0$</p><p>$10\sin x > 5$</p><p>$\sin x > \frac{1}{2}$</p><p>Решением этого неравенства является объединение интервалов $x \in (\frac{\pi}{6} + 2\pi n, \frac{5\pi}{6} + 2\pi n)$, где $n \in \mathbb{Z}$.</p><p>Теперь найдем пересечение множеств решений этих двух неравенств. Период функции $\sin x$ равен $2\pi$, а период функции $\ctg x$ равен $\pi$. Общий период будет $2\pi$. Рассмотрим решения на интервале $[0, 2\pi)$.</p><p>Решение для $\ctg x > -1$ на $[0, 2\pi)$ состоит из двух интервалов: $(0, \frac{3\pi}{4})$ и $(\pi, \frac{7\pi}{4})$.</p><p>Решение для $\sin x > \frac{1}{2}$ на $[0, 2\pi)$ - это интервал $(\frac{\pi}{6}, \frac{5\pi}{6})$.</p><p>Найдем пересечение $(\frac{\pi}{6}, \frac{5\pi}{6})$ с объединением $(0, \frac{3\pi}{4}) \cup (\pi, \frac{7\pi}{4})$.</p><p>Пересечение $(\frac{\pi}{6}, \frac{5\pi}{6})$ с $(0, \frac{3\pi}{4})$ дает интервал $(\frac{\pi}{6}, \frac{3\pi}{4})$, так как $\frac{\pi}{6} > 0$ и $\frac{3\pi}{4} < \frac{5\pi}{6}$ (поскольку $9\pi < 10\pi$).</p><p>Пересечение $(\frac{\pi}{6}, \frac{5\pi}{6})$ с $(\pi, \frac{7\pi}{4})$ пусто, так как $\frac{5\pi}{6} < \pi$.</p><p>Следовательно, решением на интервале $[0, 2\pi)$ является $(\frac{\pi}{6}, \frac{3\pi}{4})$. Учитывая периодичность $2\pi$, получаем общую область определения.</p><p><strong>Ответ:</strong> $D(y) = \bigcup_{n \in \mathbb{Z}} (\frac{\pi}{6} + 2\pi n, \frac{3\pi}{4} + 2\pi n)$.</p>"
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№17 (с. 175)
Условие. №17 (с. 175)
скриншот условия
Алгебра, 10 класс Учебник, авторы: Пак Олег Владимирович, Ардакулы Дархан, Ескендирова Елена Викторовна, издательство Алматыкітап баспасы, Алматы, 2019, Часть 1, страница 175, номер 17, Условие

Найдите область определения функции (17-18):

17. (2) a) $y=\sqrt{-2\sin x-\sqrt{3}}-\sqrt{6\cos x-3}$;

6) $y=\frac{2\operatorname{tg}x}{\sqrt{3\operatorname{ctg}x+\sqrt{3}}}+\frac{1}{\sqrt{10\sin x-5}}$.

Решение 2 (rus). №17 (с. 175)

a)

Область определения функции $y = \sqrt{-2\sin x - \sqrt{3}} - \sqrt{6\cos x - 3}$ находится из условий, что подкоренные выражения должны быть неотрицательными. Это приводит к системе неравенств:

$\begin{cases} -2\sin x - \sqrt{3} \ge 0 \\ 6\cos x - 3 \ge 0 \end{cases}$

Решим каждое неравенство отдельно.

1. Решим первое неравенство:

$-2\sin x - \sqrt{3} \ge 0$

$-2\sin x \ge \sqrt{3}$

Разделим обе части на -2 и сменим знак неравенства:

$\sin x \le -\frac{\sqrt{3}}{2}$

Решением этого тригонометрического неравенства является множество $x \in [-\frac{2\pi}{3} + 2\pi n, -\frac{\pi}{3} + 2\pi n]$, где $n \in \mathbb{Z}$.

2. Решим второе неравенство:

$6\cos x - 3 \ge 0$

$6\cos x \ge 3$

$\cos x \ge \frac{1}{2}$

Решением этого тригонометрического неравенства является множество $x \in [-\frac{\pi}{3} + 2\pi n, \frac{\pi}{3} + 2\pi n]$, где $n \in \mathbb{Z}$.

Теперь найдем пересечение решений обоих неравенств, то есть найдем значения $x$, которые одновременно удовлетворяют условиям $\sin x \le -\frac{\sqrt{3}}{2}$ и $\cos x \ge \frac{1}{2}$.

Рассмотрим решения на тригонометрической окружности. Множество решений первого неравенства $[-\frac{2\pi}{3} + 2\pi n, -\frac{\pi}{3} + 2\pi n]$ и множество решений второго неравенства $[-\frac{\pi}{3} + 2\pi n, \frac{\pi}{3} + 2\pi n]$ имеют только одну общую точку для каждого периода $2\pi$. Эта точка $x = -\frac{\pi}{3} + 2\pi n$.

В этой точке оба неравенства обращаются в равенства:

$\sin(-\frac{\pi}{3}) = -\frac{\sqrt{3}}{2}$

$\cos(-\frac{\pi}{3}) = \frac{1}{2}$

Следовательно, система неравенств имеет решение только в этих точках.

Ответ: $D(y) = \{-\frac{\pi}{3} + 2\pi n \mid n \in \mathbb{Z}\}$.


б)

Область определения функции $y = \frac{2\tg x}{\sqrt{\sqrt{3}\ctg x + \sqrt{3}}} + \frac{1}{\sqrt{10\sin x - 5}}$ находится из следующих условий:

1. Функции $\tg x$ и $\ctg x$ должны быть определены, что означает $\cos x \neq 0$ и $\sin x \neq 0$. Это эквивалентно условию $x \neq \frac{\pi k}{2}$ для любого целого $k$.

2. Выражения под корнями, находящимися в знаменателях, должны быть строго больше нуля.

Это приводит к системе неравенств:

$\begin{cases} \sqrt{3}\ctg x + \sqrt{3} > 0 \\ 10\sin x - 5 > 0 \end{cases}$

Решим каждое неравенство отдельно.

1. Решим первое неравенство:

$\sqrt{3}\ctg x + \sqrt{3} > 0$

$\sqrt{3}(\ctg x + 1) > 0$

$\ctg x > -1$

Решением этого неравенства является объединение интервалов $x \in (\pi n, \frac{3\pi}{4} + \pi n)$, где $n \in \mathbb{Z}$.

2. Решим второе неравенство:

$10\sin x - 5 > 0$

$10\sin x > 5$

$\sin x > \frac{1}{2}$

Решением этого неравенства является объединение интервалов $x \in (\frac{\pi}{6} + 2\pi n, \frac{5\pi}{6} + 2\pi n)$, где $n \in \mathbb{Z}$.

Теперь найдем пересечение множеств решений этих двух неравенств. Период функции $\sin x$ равен $2\pi$, а период функции $\ctg x$ равен $\pi$. Общий период будет $2\pi$. Рассмотрим решения на интервале $[0, 2\pi)$.

Решение для $\ctg x > -1$ на $[0, 2\pi)$ состоит из двух интервалов: $(0, \frac{3\pi}{4})$ и $(\pi, \frac{7\pi}{4})$.

Решение для $\sin x > \frac{1}{2}$ на $[0, 2\pi)$ - это интервал $(\frac{\pi}{6}, \frac{5\pi}{6})$.

Найдем пересечение $(\frac{\pi}{6}, \frac{5\pi}{6})$ с объединением $(0, \frac{3\pi}{4}) \cup (\pi, \frac{7\pi}{4})$.

Пересечение $(\frac{\pi}{6}, \frac{5\pi}{6})$ с $(0, \frac{3\pi}{4})$ дает интервал $(\frac{\pi}{6}, \frac{3\pi}{4})$, так как $\frac{\pi}{6} > 0$ и $\frac{3\pi}{4} < \frac{5\pi}{6}$ (поскольку $9\pi < 10\pi$).

Пересечение $(\frac{\pi}{6}, \frac{5\pi}{6})$ с $(\pi, \frac{7\pi}{4})$ пусто, так как $\frac{5\pi}{6} < \pi$.

Следовательно, решением на интервале $[0, 2\pi)$ является $(\frac{\pi}{6}, \frac{3\pi}{4})$. Учитывая периодичность $2\pi$, получаем общую область определения.

Ответ: $D(y) = \bigcup_{n \in \mathbb{Z}} (\frac{\pi}{6} + 2\pi n, \frac{3\pi}{4} + 2\pi n)$.

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